It's really dependent on your graphics driver. If you have Windows XP, it's likely that you can use a single monitor. Windows will realize that you have only a single monitor plugged in, and will put your desktop on it.
In the unlikely event that it doesn't do that, you can simply right click on the desktop, select "properties", and then the "settings" tab.
Select the monitor you want, and make sure that the "use this device as my primary monitor" box is checked. Select the other monitor, and turn OFF the checkbox labeled "Extend my windows desktop onto this monitor".
Thanks justlurking.
I appreciate the info. I’ll get the cable and go for it.
Regards.